Ball Joints:
I know that HPI tool! I like it too. HPI ball joints are definitely nice. Easy to snap on without any tools unless just hard to reach.
Yeah, I had 2 of them, my last one has finally broke ...got about 8 years use out of them though. They were perfect!
I had the Yeah tool for the ball joints, didn't like it, too soft a plastic IMO.
Good to know before I order and waste my money!
To snap them on, I use an old ignition plier purchased from Monkey Wards years ago. It's a sliding jaw plier like the one posted by Sakadachi, but much smaller and less than $10. You might look at the ignition tools from Snap on or MAC tools. I use it for dozens of little jobs and would hate to be without it.
I think this may be what i'll do, check out the available tools from Sears/Harbor Freight/ACE, etc... and find something that suits my needs. Monkey Wards, ...I remember those stores!